# User:Samiye Yaman/Notebook/Lab 581/2012/09/19

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## Description

Part A

• Repeat gluteraldehyde film prep

( 0.5g of PVOH, 6ml of water, 1ml of gluteraldhyde )

Part B

• Prepare second gluteraldehyde film except replace 20% of PVOH with PDMS

( 0.4 g PVOH, 6 ml of water and 0.1 g of PDMS, 1 ml of gluteraldhyde)

Part C

• Prepare 1L of gluteraldehyde fixed solution.

( Mix 1L of water with 200g of NASO4. After NaSO4 is dissolved, add 20 ml of concentrated sulfuric acid.)

Part D

• Prepare 500 ml of 20ppm SO4^-2 as CuSO4 and Na2SO4.

(Dilution of each solutions were used in order to have more accurate concentrations.)

• CuSO4: (159.02g/mol) x (2*10^(-3)mol/L) x (1L/1000ml) x (500mL)
```      =0.16 g of cupper in 500 ml HPLC grey water.
```
• For dilution
```      (m1)(v1) = (m2) (v2)
```

(2*10^(-3))(v1) = (2* 10^(-5)) (500ml)

```          v1   = 5ml of the solution in 495 ml of water.(in order to obtain a mass of 0.0016g of CuSO4 in 500 ml of water)
```
• Na2SO4: (142.04g/mol) x (2*10^(-3)mol/L) x (1L/1000ml) x (500mL)
```      =0.14 g of cupper in 500 ml HPLC grey water.

```
• For dilution

5 ml of the solution is mixed with 495 ml of water. (in order to obtain 0.0014 g of Na2SO4 in 500ml water)

• Place both of the solutions in to separate funnels and make sure the caps are on.

Part E

• Filter the clays from 12/09/2012.

## Data

• Second gluteraldehyde film with replacing 20% of PVOH with PDMS is thin and flexible.
• After the filtration, solids of 50% exchanged Na.MT and 100% exchanged Na.MT were white however Fe3O4 coated NaMT were red-brown and had a magnetic property.
• All samples are grinned well for the X-ray.

## Notes

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